Very reliable... It has killed me prematurely. Before, it was showing 235 beats, whatever that means. Possibly defective... who knows. First day of use

Overall, it is good, but it is relative to the measurements. When you put it on the index finger, it shows, for example, 97, and when you put it on the middle finger, it shows 92, although not always, most of the time it shows the same. Who knows... UPDATE 22-02-2022, in the end, it was probably not a good purchase. For the past month, it has started to delay and you have to wait 3-4 minutes for it to show. I will probably look for something more expensive and of higher quality.

It gets confused, displays random screens, doesn't work, gives you a hard time to start, choose something else.

I compared it to other more expensive ones and they showed the same prices. Very good purchase.
Update 12/2021. In the end, it didn't last very long!

Purchased for personal use.

In the first week, the cable that starts from the battery got cut, I fixed it myself. The spring came off and detached from its position, I fixed it myself.

The measurements are fluctuating heavily, especially with a slightly low battery.

But the worst of all is the screen. Blurry and weak, it is impossible to read the display outdoors, even with cloudy weather or inside a car.

Even though I have had it for 15 days, the build quality and measurements are satisfactory, especially for the money you pay.

Quite good construction and the cord is quite convenient for transportation. However, sometimes it gets stuck and you have to close and reopen it. The biggest disadvantages are the extremely low brightness and the fact that the numbers appear small. It is not recommended under any circumstances for elderly people to use it alone. A younger person should be nearby to read the results. Because it is good value for money.

The package arrived quite quickly. The product is quite good for personal use. It is easy to handle and comes with an informative brochure showing the correct oxygen levels. The construction is very good and it did not freeze up during the times I took measurements.

The product is very good, small and user-friendly. The staff at "Trampolino" is helpful in everything. Reliable and consistent in everything, they take care to satisfy the customer. Well done.

It is very good. It measures instantly. And like all oximeters, the finger you measure should not be frozen (like my fingers always are). The best in terms of value for money

Economical that has nothing to envy to something more expensive that I have. You have many options and you can easily put it aside because it has a small size

Amazing product!

Reliable very good value for money!!